A.16 Monitoring of PDU session resource setup in NG-RAN

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

The PDU Session Resource Setup procedure in NG-RAN is to assign resources on Uu and NG-U for one or several PDU session resources and the corresponding QoS flows, and to setup corresponding Data Radio Bearers for a given UE.

The PDU Session Resource Setup is one of the most key procedure to allocate resources in the NG-RAN to the UE per the QoS requirements for the NSSAI(s). Whether or not the PDU Session Resource is successfully setup for the NSSAI(s) has direct impact to the user experience. The failed PDU Session Resource Setup may directly cause the service failure for an end user. So, the performance related to the PDU Session Resource Setup for the gNB needs to be monitored.